<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>tab栏切换案例</title>
    <link rel="stylesheet" href="./index.css">
    <script src="./index.js"></script>
</head>
<body>
           <div class="box">
                <div class="nav_head">
                    <ul>
                        <li class="chose">导航栏一</li>
                        <li>导航栏二</li>
                        <li>导航栏三</li>
                    </ul>
                </div>
                <div class="nav_body">
                    <ul>
                        <li>内容一</li>
                        <li>内容二</li>
                        <li>内容三</li>
                    </ul>
                </div>
           </div> 
</body>
</html>